Composition of matter for journal-bearings



(No Model.)

P. H. HOLMES. COMPOSITION OF MATTER FOR JOURNAL BEARINGS. No. 481,949. Patented Sep-t.'6, 1892.

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UNITED STATES PATENT OFFICE,

PHILIP H. HOLMES, OF GARDINER, MAINE, ASSIGNOR TO THE HOLMES FIBRE- GRAPHITE MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS.

COMPOSITION OF MATTER FOR JOURNAL-BEARINGS.

SPECIFICATION forming part of Letters Patent No. 481,949, dated September 6, 1892.

Application filed January 2, 1892. Serial No. 416,857. (No specimens.)

To all whom it may concern: to the air-preferably in a sand orgraphite bath Be it known that I, PHILIP HENRY HOLMES, heated to the required temperature. In ora citizen of the United States, and a resident der to strengthen the carbonized compound, of Gardiner, Kennebec county, Maine, have I immerse it in a drying or semi-drying oil 5 invented an Improved Composition of Matter or an oil which can be converted intoabinder,

for Journal-Bearings, &c., of which the followso that the composition will be firmly held toing is a specification. V V gether, and the composition is then baked;

The object of my invention is to produce but the degree of heat must not be sutficient an improved composition of matter adapted to carbonize the oil. By this plan I utilize 10 for use as a journal-bearing, packing, prothe fiber as an entangling mediumto hold the jectile ring, commutator-brush, and for use plumbago while under treatment and then where two parts come into frictional contact convert it into structural carbon, the oil with or use as a conductor of electricity. which the compound was originally saturated In the accompanying drawings, Figures 1, being converted into deposited carbon and I5 2, 3, and 4 are views of different articles made the oil of the second impregnation being simof my improved composition of matter. ply set or resinified, so as to strengthen and My improved compositlon of matter contoughen the mass. sists of plumbago, carbonized fiber, and car- The essential feature of my invention as bonized oil and a resinified oil. I first int-idistinguished from my other inventions in 20 mately mix plumbago, preferably finely dithe same field is the final oil treatment of the vided and floated, with divided fiber, prefercarbonized compound. ably finely divided by any of the ordinary I claim as my inventionpulp-making machines. The plumbago and 1. A composition of matter consisting of fiber are mixed together in fluid, preferably plumbago, carbonized fiber, deposited carbon,

25 Water. Then the material is introduced into and an nncarbonized oil binder.

a mold and so compressed as to discharge the 2. The process herein described of making water, leaving the fiber and plumbago in a acompositionot' matter,saidprocessconsisting solidified mass. A filtering medium may be in, first, making a composition of plumbago, introduced, such as gypsum, in order that the fiber, and a carbonizable oil; second, subject- 0 loose particles of plumbago will not be caring the composition to such a heat as to carried off by the water, this filtering material bonize the fiber and oil; third, subjecting the acting with the fiber to hold the plumbago composition to a treatment with an oil binder, within the mold. The product is then dried and, fourth, drying or heating the composiand saturated with oil. Any oil that will cartion, so as to cause the oil to set'or resinify,

35 bonize under heat will answer; but I prefer substantially as described.

usingadrying-oil. The compound,thoroughly In testimony whereof I have signed my saturated, is then baked under sufficient heat name to this specification in the presence of to thoroughly carbonize the fiber and oil two subscribing witnesses.

throughout the mass, although in some cases 7 PHILIP H. HOLMES. 0 only the exterior surface may be carbonized, Witnesses:

according to the use to which the article is to be EUGENE ELTERIOH,

put. I carbonize the material while not exposed HENRY HOWSON. 

